1. Department of Gynecology and Obstetrics, Helios Hospital Erfurt, Erfurt, Germany
2. Department of Obstetrics and Gynecology, University of Düsseldorf, Düsseldorf, Germany
3. Department of Obstetrics and Gynecology, Medical Center – University of Freiburg, Freiburg, Germany
4. Faculty of Medicine, University of Freiburg, Freiburg, Germany
5. Faculty of Medicine, University of Tübingen, Tübingen, Germany
6. Department of Urogynecology, German Pelvic Floor Center, St. Hedwig Hospital, Berlin, Germany
7. Department of Womenʼs Health, University Hospital of Tübingen, Tübingen, Germany